Power Seat Wiring

[rebelbayou]

Hi,

I have a '98 T4R Limited with power leather seats. The bottom leather on the driver's side was cracked and busted so yesterday I went to a salvage yard and purchased a drivers seat out of a wrecked '99 with no cracks or tears and the same color. Looks identical but the electrical plug on the bottom is different. The plug on my 98 has 2 prongs and the 99 has 3 prongs. Could someone tell me what I need to do or point me to a link that explains this? I have searched the forums for a while and can't find anything relating to the different plugins. Thanks in advance for any advice or comments.

 

[MONTYMTB]

Not sure if this is the issue, but perhaps the '99 had heated seats and yours doesn't?

 

[jd_adventuresquad]

i know this is an old post but perhaps someone can chime in. I just found a set and now i am having the same problem? is there a fix to this?

 

[TheDurk]

i know this is an old post but perhaps someone can chime in. I just found a set and now i am having the same problem? is there a fix to this?

The EWDs show that both '98 and '99 go through a three-pin connector under the seat, but not the same one. The power for the seats is a blue wire on Pin 1 and a ground is a white-black on Pin 3. Since the seat is the one with the extra wire just disregard it. I can't find what it goes to but it is not the power seat circuit. So the power seat circuit doesn't need it. Just connect blue to blue and white-black to white-black and ditch the connectors, or use any mating set of two-wire connectors you can find.

Surprised I missed this the first time.

 

[jd_adventuresquad]

The EWDs show that both '98 and '99 go through a three-pin connector under the seat, but not the same one. The power for the seats is a blue wire on Pin 1 and a ground is a white-black on Pin 3. Since the seat is the one with the extra wire just disregard it. I can't find what it goes to but it is not the power seat circuit. So the power seat circuit doesn't need it. Just connect blue to blue and white-black to white-black and ditch the connectors, or use any mating set of two-wire connectors you can find.

Surprised I missed this the first time.

thanks durk!! i'll try this and let you know how it works out

 

[Myrunr2010]

The EWDs show that both '98 and '99 go through a three-pin connector under the seat, but not the same one. The power for the seats is a blue wire on Pin 1 and a ground is a white-black on Pin 3. Since the seat is the one with the extra wire just disregard it. I can't find what it goes to but it is not the power seat circuit. So the power seat circuit doesn't need it. Just connect blue to blue and white-black to white-black and ditch the connectors, or use any mating set of two-wire connectors you can find.

Surprised I missed this the first time.

I guess I shouldn't be at this point, but I am still always surprised at how much knowledge you have about 3rd gens, lol

 

[TheDurk]

I guess I shouldn't be at this point, but I am still always surprised at how much knowledge you have about 3rd gens, lol

A high school math teacher of mine once said, "The mark of an educated man is not that he knows everything, but that he knows how to look it up."

This time I got lucky, I have the EWDs for both years. I've got them all except for '97. I'm a geek of the 1960s variety. Instead of playing video games, we would take apart old TVs and build stuff from the parts using schematics in books and magazines. I'm at home with wire diagrams.

Plus I've owned and maintained a 3rd Gen for 17 years.

 

[jd_adventuresquad]

worked like a charm! thanks again Durk!

 

[IBallEngineer]

A high school math teacher of mine once said, "The mark of an educated man is not that he knows everything, but that he knows how to look it up."

This time I got lucky, I have the EWDs for both years. I've got them all except for '97. I'm a geek of the 1960s variety. Instead of playing video games, we would take apart old TVs and build stuff from the parts using schematics in books and magazines. I'm at home with wire diagrams.

Plus I've owned and maintained a 3rd Gen for 17 years.

Henry Ford once sued a newspaper for slander because they called him ignorant. In court the atty for the newspaper started asking him questions like "who is the president of Zimbabwe?". Ford answered some questions then stated out loud "Sir, I may not know the answers to all the trivia you are asking me, but I'll tell you one thing. On my desk I have a phone, and I can use that phone, and I CAN find out whatever I need." Of course I never found out how to build a 3rd gen 4runner!

 

[Spktyr]

The EWDs show that both '98 and '99 go through a three-pin connector under the seat, but not the same one. The power for the seats is a blue wire on Pin 1 and a ground is a white-black on Pin 3. Since the seat is the one with the extra wire just disregard it. I can't find what it goes to but it is not the power seat circuit. So the power seat circuit doesn't need it. Just connect blue to blue and white-black to white-black and ditch the connectors, or use any mating set of two-wire connectors you can find.

Surprised I missed this the first time.

Revisiting this in the course of doing research my BMW seat swap and figuring out the wiring for it.



Key Reminder And Seat Belt Warning

On the driver's seat that 'extra wire' (white with red stripe) at the seat connector is power to the seat belt buckle switch - the switch tells the car that you have your seatbelt on and that it can turn off the seatbelt light.

The 'extra' one on the passenger side (yellow with green stripe) is actually considerably more important. This wire provides power to the Occupant Detector Sensor (really a weight switch) and through that to the seat belt buckle switch and then to ground. The ODS tells the computer that someone is sitting in that seat and to activate the airbag. It *must* be wired up correctly or if you have a passenger and get into an accident the airbag will not deploy, perhaps depriving them of needed protection.

All of this grounds, as best I can tell, either through the power seat motors' ground wire or through the seat bolts into the body. Have to look into this further.

 

[TheDurk]

Revisiting this in the course of doing research my BMW seat swap and figuring out the wiring for it.



Key Reminder And Seat Belt Warning

On the driver's seat that 'extra wire' (white with red stripe) at the seat connector is power to the seat belt buckle switch - the switch tells the car that you have your seatbelt on and that it can turn off the seatbelt light.

The 'extra' one on the passenger side (yellow with green stripe) is actually considerably more important. This wire provides power to the Occupant Detector Sensor (really a weight switch) and through that to the seat belt buckle switch and then to ground. The ODS tells the computer that someone is sitting in that seat and to activate the airbag. It *must* be wired up correctly or if you have a passenger and get into an accident the airbag will not deploy, perhaps depriving them of needed protection.

All of this grounds, as best I can tell, either through the power seat motors' ground wire or through the seat bolts into the body. Have to look into this further.

No, not in the case of the OP. I carefully checked the EWDs for HIS year, and the detector was not part of the SRS system; it only activated the little light on the dash. The SRS would fire if the seat was occupied or not. You are using a 2002 EWD; it applies ONLY to 2002 (and probably 2001, as they are generally clones.).

 

[TheDurk]

Looking at your thread, you have a 2000. You will want to use these EWDs:

 

[TheDurk]

You will note that even in your year, the seat sensor DOES NOT tie to the SRS. That only happens in '01 and '02.

See the difference?

http://www.teamtoyota4x4.org/archivio/1996%20to%202002%20Toyota%204Runner%20Repair%20and%20Wiring%20Manuals/techinfo.toyota.com/ileaf/ewdtmc2/ewdtmpdf/ewdsourc/2002/024runne/systemci/038srs.pdf